The new warning says there is a “good chance” that lives could be put at risk due to flying debris and people are advised not to travel unless absolutely necessary.
It reads: “There is a good chance that flying debris could result in a danger to life
“Damage to buildings and homes is likely, with roofs blown off and power lines brought down.
“Roads, bridges and railway lines are likely to close, with delays and cancellations to bus, train, ferry services and flights.
“There is a good chance that power cuts, possibly prolonged, could occur and possibly affect other services, such as mobile phone coverage.
“Large waves are likely and beach material is likely to be thrown onto sea fronts, coastal roads and properties.
“It is likely there will be falling branches and some uprooted trees.”
The Met Office expects “extremely strong winds” to develop over southwest England early on Friday, before spreading north and east during the day.
"Whilst there is still some uncertainty in the track of Eunice, there is an increasing likelihood of widespread inland wind gusts of 60-70 mph and up to 80 mph in a few places,” the weather agency said.
"Around coasts of west Wales and southwest England, gusts of 90 or possibly even 100 mph are possible.
"Winds are expected to ease across western areas through the afternoon, and eastern areas during the evening.”
A yellow warning for wind is in place from 1pm today as Storm Dudley sweeps across the country and will last until 6am tomorrow morning (Thursday, February 17).
The Met Office says Storm Dudley is set to bring to bring a spell of very strong winds and possible disruption, with the chance of some travel delays and cancellations, as well as potential power cuts, and damage to trees and buildings.